.jumbotron {
    display: flex;
    justify-content: center;
}

.login {
    width: 500px;
    height: 300px;
    padding-top: 50px;
    display: flex;
    justify-content: center;
}

h1 {
    text-align: center;
}

body {
    background: url(../images/微信图片_20210624143133.jpg);
    background-position: center center;
}

.form-group {
    color: #c1c1c1;
    font-size: 20px;
    text-align: center;
    margin-top: 20px;
    display: flex;
    justify-content: space-around;
}

.mop {
    width: 80px;
    margin-right: 30px;
}

button {
    padding: 0 15px 0 15px;
    font-size: 20px;
}

.ooo {
    margin-top: 50px;
}